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Finding the Fourth Proportional to 582,436.68, 804,010.62 and 391,560.78

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Solution

The fourth proportional to 582,436.68, 804,010.62 and 391,560.78 is: 540,520.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,436.68 : 804,010.62 = 391,560.78 : x
  2. Step 2: Convert to fraction form
    582,436.68/804,010.62 = 391,560.78/x
  3. Step 3: Cross multiply
    582,436.68x = 804,010.62 × 391,560.78
  4. Step 4: Simplify right side
    582,436.68x = 314,819,029,978.88
  5. Step 5: Solve for x
    x = 314,819,029,978.88/582,436.68
  6. Step 6: Final answer
    x = 540,520.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.